<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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    <meta name="apple-mobile-web-app-capable" content="yes">
    <title>OpenLayers Fill, Stroke, and Graphic Example</title>
    <link rel="stylesheet" href="../theme/default/style.css" type="text/css">
    <link rel="stylesheet" href="style.css" type="text/css">
    <script src="../lib/OpenLayers.js" type="text/javascript"></script>
    <script type="text/javascript">
        var map;

        function init() {
            map = new OpenLayers.Map('map');
            
            var layer = new OpenLayers.Layer.WMS( "OpenLayers WMS", 
                    "http://vmap0.tiles.osgeo.org/wms/vmap0", {layers: 'basic'} );
            map.addLayer(layer);
            
            // allow testing of specific renderers via "?renderer=Canvas", etc
            var renderer = OpenLayers.Util.getParameters(window.location.href).renderer;
            renderer = (renderer) ? [renderer] : OpenLayers.Layer.Vector.prototype.renderers;
            
            var vectorLayer = new OpenLayers.Layer.Vector("Simple Geometry", {
                styleMap: new OpenLayers.StyleMap({
                    'default': new OpenLayers.Style(null, {
                        rules: [
                            new OpenLayers.Rule({
                                symbolizer: {
                                    graphic: false,
                                    label: "Label for invisible point",
                                    labelSelect: true,
                                    fontStyle: "italic"
                                },
                                filter: new OpenLayers.Filter.Comparison({
                                    type: "==",
                                    property: "topic",
                                    value: "point_invisible"
                                })
                            }),
                            new OpenLayers.Rule({
                                symbolizer: {
                                    stroke: true,
                                    fill: true,
                                    label: "Polygon with stroke and fill defaults"
                                },
                                filter: new OpenLayers.Filter.Comparison({
                                    type: "==",
                                    property: "topic",
                                    value: "polygon_defaults"
                                })
                            }),
                            new OpenLayers.Rule({
                                symbolizer: {
                                    stroke: true,
                                    fill: false,
                                    label: "Point without fill",
                                    labelAlign: "rb",
                                    fontColor: "#ff0000",
                                    fontOpacity: 0.4
                                },
                                filter: new OpenLayers.Filter.Comparison({
                                    type: "==",
                                    property: "topic",
                                    value: "point_nofill"
                                })
                            })
                        ]
                    })
                }),
                renderers: renderer
            });
            
            // create a point feature
            var point = new OpenLayers.Geometry.Point(-111.04, 45.68);
            var pointFeature = new OpenLayers.Feature.Vector(point);
            pointFeature.attributes = {
                topic: "point_invisible"
            };
            
            // create a polygon feature from a linear ring of points
            var pointList = [];
            for(var p=0; p<6; ++p) {
                var a = p * (2 * Math.PI) / 7;
                var r = Math.random(1) + 1;
                var newPoint = new OpenLayers.Geometry.Point(point.x + 5 + (r * Math.cos(a)),
                                                             point.y + 5 + (r * Math.sin(a)));
                pointList.push(newPoint);
            }
            pointList.push(pointList[0]);
            
            var linearRing = new OpenLayers.Geometry.LinearRing(pointList);
            var polygonFeature = new OpenLayers.Feature.Vector(
                new OpenLayers.Geometry.Polygon([linearRing]));
            polygonFeature.attributes = {
                topic: "polygon_defaults"
            };
            
            multiFeature = new OpenLayers.Feature.Vector(
                new OpenLayers.Geometry.Collection([
                    new OpenLayers.Geometry.LineString([
                        new OpenLayers.Geometry.Point(-105,40),
                        new OpenLayers.Geometry.Point(-95,45)
                    ]),
                    new OpenLayers.Geometry.Point(-105, 40)
                ]),
                {
                    topic: "point_nofill"
                });
            
            map.addLayer(vectorLayer);
            vectorLayer.drawFeature(multiFeature);
            map.setCenter(new OpenLayers.LonLat(point.x, point.y), 4);
            vectorLayer.addFeatures([pointFeature, polygonFeature, multiFeature]);
            var select = new OpenLayers.Control.SelectFeature(vectorLayer, {
                selectStyle: OpenLayers.Util.extend(
                    {fill: true, stroke: true},
                    OpenLayers.Feature.Vector.style["select"])
            });
            map.addControl(select);
            select.activate();
        }
    </script>
  </head>
  <body onload="init()">
    <h1 id="title">OpenLayers Example</h1>
    <div id="tags">
        vector, feature, symbolizer, filter, comparison, labeling, light
    </div>
    <p id="shortdesc">
        Demonstrate fill, stroke, and graphic property of symbolizers.
    </p>
    <div id="map" class="smallmap"></div>
    <div id="docs">
    This example shows how to use symbolizers with defaults for stroke, fill, and graphic.
    This also allows to create labels for a feature without the feature rendered. Click on
    the label in the middle to see selection of features with labelSelect set to true.
    </div>
  </body>
</html>
